| Subject |
|---|
| office desk [1] |
| office furniture [1] |
| oheň [1] |
| ohniště [1] |
| ohýbaná překližka [1] |
| oko [2] |
| oltář [1] |
| on-line [1] |
| op-art [1] |
| open air museum [1] |
| open face [1] |
| operace oka [1] |
| Operating resources [1] |
| optical data medium [1] |
| optical illusion [1] |
| optical soundtrack recording [1] |
| optické nosiče [1] |
| optický klam [1] |
| optický záznam [1] |
| organic [1] |